[The removal of dental deposits in the prevention of periodontal diseases].

A total of 174 subjects aged 18 to 24 were examined using the Greene-Vermillion index of dental deposit for the assessment of the oral cavity hygienic status. The intensity of chronic gingivitis was assessed using the PMA index modified by Parma. In all the patients dental deposit was removed using cotton cones formed on fine conical fissure bores fixed in angular tips. Phosphate cement powder was used as a abrasion material. In a month the patients were examined repeatedly. One session of a professional removal of the dental deposit was found sufficient to reduce the dental deposit index and the intensity of chronic gingivitis, this permitting a conclusion on the efficacy of this preventive method and recommending it for practice.